My son is 12 years old. I've coached him (head coach or ass't) in everything he's done. In baseball he's gone from rec ball to weekend travelling to select. As with many other people, I've seen my share of good, bad, biased and outright cheating umps. For both sides. I've also seen my share of coaches and parents who have kept their cool and also ones who have lost it. I've also BEEN a player in these situations.

Though I am sure you know this deep down, but you were wrong to act the way you did. If this is in some organized league (actually Little League?) then expect to be banned for some period of time. If the organization doesn't ban you, then they are irresponsible in their duties.